package main

import (
    "fmt"
    "reflect"
)

type resume struct {
    Name string `json:"name" doc:"我的名字"`
}

func findDoc(stru interface{}) map[string]string {
    t := reflect.TypeOf(stru).Elem()
    doc := make(map[string]string)

    for i := 0; i < t.NumField(); i++ {
        doc[t.Field(i).Tag.Get("json")] = t.Field(i).Tag.Get("doc")
    }

    return doc

}

func main() {
    var stru resume
    doc := findDoc(&stru)
    fmt.Printf("name字段为：%s\n", doc["name"])
}